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You have a ball on a wire that is twirled in a circular orbit with a radius of 3.8 m, and the centripetal force acting on the ball, that has a mass of 60 kg, is 355 N. What is the speed of the ball in orbit? Hint: this is a problem in which you must solve the force equation for the velocity.
An airplane travelling 1001 m above the ocean at 125km/hr is to drop a box of supplies to shipwrecked victims below. How various seconds (t) before being dropped directly overhead should the box be dropped.
A stone is thrown vertically upward with a speed of 16.0 m/s. How fast is it moving when it reaches a height of 12 m? How long is required to reach this height?
Young's double-slit experiment is performed with 570 nm light and a distance of 2.00 m between the slits and the screen. The tenth interference minimum is observed 7.64 mm from the central maximum. Settle on the spacing of the slits.
You are stranded on a deserted island. You have some wire, but no magnets. You decide to use the Earth's magnetic field, the only one available to you. What area must the coil have
Classify and explain the five legal theories you could use in an attempt to have the regulation declared invalid and overturned in court.
An arrow is fired with a speed of 23 m/s at a block of Styrofoam resting on a smooth surface. The arrow penetrates a certain distance into block before coming to rest relative to it. All through this process the arrow's deceleration has the magnit..
In a head-on collision, the car stops in 0.23 {rm s} from a speed of 17 {rm m}/{rm s}. The driver has a mass of 77 {rm kg}, and is, fortunately, tightly strapped into his seat. What force is applied to the driver by his seat belt during that fract..
Draw two diagrams for the situation where a moving train (with initial speed v0) collides elastically with a target train that is not intially moving, Show that the final velocity of each train will be:
A parallel combination of a 1.11-?F capacitor and a 2.89-?F one is connected in series to a 4.65-?F capacitor. compute the charge of each capacitor
The Earth is constantly being bombarded by cosmic rays, which consist mostly of protons. what is the total charge incident on the atmosphere
An asteroid is discovered heading straight toward Earth at 13 km/s. An international team manages to attach a giant rocket engine to the asteroid. The rocket fires for 10 min, after which the asteroid is moving at 26 degree to its original path at..
A 1.00-kg glider attached to a spring with a force constant 25.0 N/m oscillates on a frictionless, horizontal air track. Find the period of the glider's motion
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